Overview of ULN2804A by STMicroelectronics
The ULN2804A by STMicroelectronics is a high-voltage, high-current Darlington transistor array. This component is designed to interface between low-logic level digital circuits and higher power loads, such as relays, solenoids, and motors. Housing an array of eight NPN Darlington pairs, it enables the direct control of relatively high-current loads with simple logic signals. Each pair is capable of driving loads up to 500mA with a collector-emitter voltage max of 50V. Encased in a DIP-18 (Dual In-line Package) with a plastic/epoxy body material, it ensures a reliable connection for through-hole mounting. The device is notable for its logic level compatibility, allowing it to be interfaced with a wide range of microcontrollers and digital circuits.
The ULN2804A also highlights a feature set conducive for switching applications, which includes an operating temperature range from -20°C to +150°C, ensuring performance reliability across various environmental conditions. Additionally, it is RoHS compliant, reflecting STMicroelectronics’ commitment to producing environmentally friendly components. With a lead time of 16 weeks and 3 days as of the current writing, planning for procuring this component is essential for project timelines.
Industry Applications for ULN2804A
The versatility of the ULN2804A allows it to serve multiple industries in applications where driving high-current loads from logic signals is necessary. While these applications are potential uses, their viability would require verification by engineering and design teams based on specific requirements. Some key industries and possible use cases include:
- Industrial Automation: In environments where control of actuators, sensors, and other machinery is automated, the ULN2804A can be a crucial part of the actuator control circuits. For example, it can drive stepper motors, solenoids, or relays that activate various machine functions.
- Renewable Energy: Within renewable energy systems, especially in solar panel trackers and wind turbine controllers, the ULN2804A could potentially be utilized to adjust positions or control mechanisms that optimize energy capture.
- Robotics and Drones: Robotics often require precise control over motors and actuators. The ULN2804A can serve as an interface between low-power control boards and the high-power motors or servos in these applications, offering efficient power management and motion control.
Note that these potential applications are only conceptual and require in-depth analysis by engineering and design teams to ensure compatibility and performance within each specific context.
About STMicroelectronics
STMicroelectronics is a globally recognized leader in the semiconductor industry, producing a wide range of electronic components including a variety of transistors. Their product line spans across all major categories of transistors, including Small Signal Bipolar Transistors, power transistors, and MOSFETs. The company is known for its commitment to innovation, quality, and sustainability. Their ULN2804A Darlington transistor array exemplifies their expertise in developing components that address the need for interfacing between digital logic and power loads. STMicroelectronics manufactures similar parts like the ULN2804A, catering to a wide range of power management and control applications, underlining their role as a key player in the semiconductor industry specializing in transistors and other electronic components.
Where to Find ULN2804A by STMicroelectronics
For those interested in acquiring the ULN2804A component for their projects, it is recommended to conduct comprehensive research on findchips.com. This platform offers real-time data on stock levels, pricing, and the availability of the ULN2804A from a variety of distributors. While historically, this part has been available from distributors such as Win Source Electronics, Perfect Parts Corporation, EBV Elektronik, and Future Electronics, it’s crucial to visit findchips.com for the most current information. Additionally, for those seeking alternatives within the category of Small Signal Bipolar Transistors, findchips.com provides a comprehensive database of components offered by STMicroelectronics and other manufacturers, facilitating the search for the most suitable parts for any application.